Claude 4.5 Sonnet (Non-reasoning) vs Claude Fable 5.1 (Low, Default Fallback)

Claude 4.5 Sonnet (Non-reasoning) vs Claude Fable 5.1 (Low, Default Fallback). A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

AnthropicClaude 4.5 Sonnet (Non-reasoning)Not ranked · benchmark data missing
Intelligence
19.30
Total cost
-
AnthropicClaude Fable 5.1 (Low, Default Fallback)Off the frontier
Intelligence
46.80
Total cost
$3158
Verdict

Comparison incomplete

A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

MetricClaude 4.5 Sonnet (Non-reasoning)Claude Fable 5.1 (Low, Default Fallback)Difference
Intelligence (higher is better)19.346.8+142.5% Claude Fable 5.1 (Low… is 2.4× more intelligent
Total AA cost (lower is better)Not reported$3,157.66— not comparable
End-to-end time (lower is better)11.73s10.92s−6.9% Claude Fable 5.1 (Low… is 6.9% faster
Price per 1M tokens (in / out)$3.00 / $15.0$10.0 / $50.0
Input modalitiesText, ImageText, Image
Open this matchup in the interactive pickerClaude 4.5 Sonnet (Non-reasoning): what beats itClaude Fable 5.1 (Low, Default Fallback): what beats it
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Agents: Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/claude-4-5-sonnet/claude-fable-5-1-low · Markdown: /api/v1/compare/claude-4-5-sonnet/claude-fable-5-1-low?format=md · llms.txt · agent skill